{"id":1589,"date":"2024-05-08T14:56:42","date_gmt":"2024-05-08T06:56:42","guid":{"rendered":"http:\/\/oneai.eu.org\/?p=1589"},"modified":"2024-05-08T14:56:42","modified_gmt":"2024-05-08T06:56:42","slug":"%e8%a1%a8%e7%a9%ba%e9%97%b4%e9%87%8a%e6%94%be","status":"publish","type":"post","link":"https:\/\/oneai.eu.org\/?p=1589","title":{"rendered":"\u8868\u7a7a\u95f4\u91ca\u653e"},"content":{"rendered":"

\u4e00\u3001\u8868\u7684\u5360\u7528\u7a7a\u95f4\u5927\u5c0f\u91ca\u653e\u539f\u7406<\/p>\n

\u80cc\u666f\uff1a<\/p>\n

\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u8868\u7531\u4e8e\u6570\u636e\u4e0d\u65ad\u63d2\u5165\uff0c\u5bfc\u81f4\u7a7a\u95f4\u8d8a\u6765\u8d8a\u5927\uff0c\u7531\u4e8e\u524d\u671f\u914d\u7f6e\u95ee\u9898\uff0c\u6ca1\u6709\u505a\u5206\u533a\u6216\u8005\u5176\u4ed6\u4f18\u5316\uff0c\u800c\u4e14\u751f\u4ea7\u6570\u636e\u5b9e\u65f6\u5411\u8868\u63d2\u5165\u3002\u8981\u5220\u9664\u5386\u53f2\u6570\u636e\u6765\u91ca\u653e\u7a7a\u95f4\u3002<\/p>\n

\u5206\u6790\uff1a<\/p>\n

\uff081\uff09\u6ca1\u505a\u5206\u533a\u8868\uff1a<\/p>\n

\u7531\u4e8e\u6ca1\u6709\u5206\u533a\u8868\uff0c\u6240\u4ee5\u65e0\u6cd5\u5206\u5757\u5bf9\u8868\u8fdb\u884c\u6e05\u7406\u3002<\/p>\n

\uff082\uff09\u8868\u5b9e\u65f6\u63d2\u5165\u6570\u636e\uff0c\u6570\u636e\u91cf\u5927\uff0c\u8981\u4fdd\u7559\u90e8\u5206\u6570\u636e\uff1a<\/p>\n

\u65e0\u6cd5\u91c7\u7528\u5c06\u6709\u6548\u6570\u636e\u63d2\u5165\u53e6\u4e00\u4e2a\u8868\uff0cdrop\u539f\u8868\uff0c\u4fee\u6539\u540d\u5b57\u6765\u5220\u9664\u539f\u8868\uff0c\u6216\u8005truncate\u539f\u8868\uff0c\u6765\u91ca\u653e\u7a7a\u95f4\u3002<\/p>\n

\uff083\uff09\u5220\u9664\u5386\u53f2\u6570\u636e\uff1a<\/p>\n

\u7528delete from \u52a0\u6761\u4ef6\uff0c\u5220\u9664\u5386\u53f2\u6570\u636e\u3002<\/p>\n

\u73b0\u8c61\uff1a<\/p>\n

\u4f8b\u5b50\uff1awxk_big_tab_bak \u8868\u3002<\/p>\n

SELECT COUNT(*) FROM wxk_big_tab_bak<\/p>\n

168522<\/p>\n

\u00a0<\/p>\n

SQL> selectround(BYTES\/1024\/1024,2)||'M' from user_segments where segment_name='WXK_BIG_TAB_BAK';<\/p>\n

ROUND(BYTES\/1024\/1024,2)||'M'<\/p>\n

\n

21M<\/p>\n

\u00a0<\/p>\n

\u5bf9wxk_big_tab_bak \u8fdb\u884cdelete\u64cd\u4f5c\u3002<\/p>\n

DECLARE<\/p>\n

\u00a0\u00a0 row_num number := 0;<\/p>\n

begin<\/p>\n

\u00a0\u00a0 for gyj_test IN (select ROWID from wxk_big_tab_bak t where t.id\u00a0 <=168522 )\u00a0 LOOP<\/p>\n

\u00a0 delete from\u00a0wxk_big_tab_bak\u00a0 WHERE ROWID = gyj_test.rowid ;<\/p>\n

\u00a0\u00a0 row_num := row_num +1;<\/p>\n

---100\u6761\u63d0\u4ea4\u4e00\u6b21,\u53ef\u6839\u636e\u9700\u8981\u4fee\u6539<\/p>\n

\u00a0\u00a0 if mod(row_num,100) = 0 THEN<\/p>\n

\u00a0\u00a0\u00a0\u00a0 commit;<\/p>\n

\u00a0\u00a0 end if;<\/p>\n

end loop;<\/p>\n

commit;<\/p>\n

end;<\/p>\n

\/<\/p>\n

\u6267\u884c\u5220\u9664\u540e<\/p>\n

SELECT COUNT(*) FROM wxk_big_tab_bak<\/p>\n

0<\/p>\n

\u518d\u6b21\u67e5\u770b<\/p>\n

SQL> selectround(BYTES\/1024\/1024,2)||'M' from user_segments where segment_name='WXK_BIG_TAB_BAK';<\/p>\n

ROUND(BYTES\/1024\/1024,2)||'M'<\/p>\n

\n

21M<\/p>\n

\u00a0<\/p>\n

\u8fd8\u662f21M\u6ca1\u6709\u53d8\u5316\u3002<\/p>\n

\u4f46\u662f\u8868\u91cc\u5df2\u7ecf\u6ca1\u6709\u6570\u636e\u4e86\u3002<\/p>\n

\u8fd9\u91cc\u6ce8\u610f\uff0c\u518d\u6b21\u7528\u63d2\u5165\u547d\u4ee4\u65b0\u7684\u6570\u636e\uff0c\u8868\u7684\u5927\u5c0f\u6ca1\u6709\u53d8\u5316\u3002\u7531\u6b64\u53ef\u89c1\uff0c\u6570\u636e\u7684\u7a7a\u95f4\u786e\u5b9e\u88ab\u91ca\u653e\u4e86\uff0c\u53ef\u4ee5\u5b58\u50a8\u5176\u4ed6\u4fe1\u606f\uff0c\u4f46\u662f\u4ece\u67e5\u8be2\u4e0a\u770b\uff0c\u8868\u5360\u7528\u7684\u7a7a\u95f4\u5927\u5c0f\u6ca1\u6709\u7f29\u5c0f\uff0c\u6ca1\u6709\u6574\u7406\u8868\u788e\u7247\u3002\uff08\u9ad8\u6c34\u4f4d\u95ee\u9898\uff09\u3002<\/p>\n

\u00a0<\/p>\n

\u5982\u679c\u9700\u8981\u5c06\u8868\u7684\u7a7a\u95f4\u8fdb\u884c\u7f29\u5c0f\uff0c\u6709\u4e24\u4e2a\u529e\u6cd5\uff1a<\/p>\n

\uff081\uff09move<\/p>\n

\uff082\uff09shrink<\/p>\n

1\u3001\u5bf9\u4e8e\u7a7a\u95f4\u7684\u8981\u6c42\uff0cshrink\u4e0d\u9700\u8981\u989d\u5916\u7684\u7a7a\u95f4\uff0cmove\u9700\u8981\u4e24\u500d\u7684\u7a7a\u95f4<\/p>\n

2\u3001shrink\u7684\u7b97\u6cd5\u662f\u4ecesegment\u7684\u5e95\u90e8\u5f00\u59cb\uff0c\u79fb\u52a8row\u5230segment\u7684\u9876\u90e8\uff0c\u79fb\u52a8\u7684\u8fc7\u7a0b\u76f8\u5f53\u4e8edelete\/insert\u64cd\u4f5c\u7684\u7ec4\u5408\uff0c\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u4f1a\u4ea7\u751f\u5927\u91cf\u7684undo\u548credo\u4fe1\u606f\u3002<\/p>\n

3\u3001move\u662f\u76f4\u63a5\u79fb\u52a8\u6570\u636e\u5757\u7684\u4f4d\u7f6e\uff0c\u9274\u4e8e\u4e0a\u9762\u7684\u539f\u56e0\uff0c\u5728\u4f7f\u7528shrink\u7684\u65f6\u5019\uff0c\u8017\u65f6\u53ef\u80fd\u975e\u5e38\u957f\uff0c\u901a\u5e38\u6162\u4e8emove\u3002<\/p>\n

4\u3001move\u662f\u4e0d\u80fd\u5728\u7ebf\u8fdb\u884c\u7684\uff0c\u800c\u4e14move\u540e\u76f8\u5e94\u7684\u7d22\u5f15\u4e5f\u4f1a\u5931\u6548\u3002shrink\u7684\u4e00\u4e2a\u4f18\u70b9\u662f\u80fd\u5728\u7ebf\u8fdb\u884c\uff0c\u4e0d\u5f71\u54cd\u8868\u4e0a\u7684DML\u64cd\u4f5c\uff0c\u5f53\u7136\uff0c\u5e76\u53d1\u7684DML\u64cd\u4f5c\u5728shrink\u7ed3\u675f\u7684\u65f6\u523b\u4f1a\u51fa\u73b0\u77ed\u6682\u7684block\uff1bshrink\u7684\u53e6\u5916\u4e00\u4e2a\u4f18\u70b9\u662f\u5728\u788e\u7247\u6574\u7406\u7ed3\u675f\u540e\uff0c\u8868\u4e0a\u76f8\u5173\u7684index\u4ecd\u7136enable\u3002<\/p>\n

\u00a0<\/p>\n

\u5bf9\u4e8e\u4e00\u822c\u7cfb\u7edf\uff0c\u53ef\u91c7\u7528shrink\u65b9\u5f0f\uff08\u4ec5\u4ec5\u9002\u7528\u4e8e\u5806\u8868,\u4e14\u4f4d\u4e8e\u81ea\u52a8\u6bb5\u7a7a\u95f4\u7ba1\u7406\u7684\u8868\u7a7a\u95f4(\u5806\u8868\u5305\u62ec:\u6807\u51c6\u8868,\u5206\u533a\u8868,\u7269\u5316\u89c6\u56fe\u5bb9\u5668,\u7269\u5316\u89c6\u56fe\u65e5\u5fd7\u8868)\uff09\uff1a<\/p>\n

\uff081\uff09\u542f\u7528\u884c\u8bb0\u5f55\u8f6c\u79fb(enable row movement)\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0<\/p>\n

alter table wxk_big_tab_bak enable row movement ;<\/p>\n

\uff082\uff09\u8fd9\u91cc\u5148\u6267\u884ccompact \u518d \u5230\u7a7a\u95f2\u65f6\u95f4\u6267\u884c cascade<\/p>\n

ALTER TABLE wxk_big_tab_bak SHRINK SPACE COMPACT<\/p>\n

ALTER TABLE wxk_big_tab_ba SHRINK SPACE cascade\u00a0<\/p>\n

--compact:\u4ec5\u4ec5\u662f\u7f29\u5c0f\u8868\u548c\u7d22\u5f15\uff0c\u5e76\u4e0d\u79fb\u52a8\u9ad8\u6c34\u4f4d\u7ebf\uff0c\u4e0d\u91ca\u653e\u7a7a\u95f4<\/p>\n

--cascade:\u7f29\u5c0f\u8868\u53ca\u5176\u7d22\u5f15\uff0c\u5e76\u79fb\u52a8\u9ad8\u6c34\u4f4d\u7ebf\uff0c\u91ca\u653e\u7a7a\u95f4<\/p>\n

\u00a0<\/p>\n

\u5bf9\u4e8e\u91cd\u8981\u7cfb\u7edf\uff0c\u6700\u597d\u8fd8\u662f\u91c7\u7528move<\/p>\n

\uff081\uff09move\u524d\u6700\u597d\u903b\u8f91\u5907\u4efd\u5f85\u6574\u7406\u7684\u8868\uff1b<\/p>\n

\uff082\uff09--\u67e5\u770b\u7d22\u5f15<\/p>\n

select index_name,table_name,tablespace_name,index_type,status\u00a0 from dba_indexes\u00a0 where table_owner='WXK'
\n\uff083\uff09\u5bf9\u4e8e\u5927\u8868\uff0c\u5efa\u8bae\u5f00\u542f\u5e76\u884c\u548cnologging
\n\u00a0\u00a0 \u00a0alter table wxk_big_tab_bak MOVE nologging parallel 2;
\n\uff084\uff09\u6574\u7406\u5b8c\u6bd5\u540e\u91cd\u5efa\u76f8\u5173\u7684\u7d22\u5f15
\n\u00a0\u00a0 \u00a0alterindex SYS_C0011093 rebuild nologgingparallel 2;
\n\uff085\uff09\u6062\u590d\u8868\u548c\u7d22\u5f15\u7684\u5e76\u884c\u5ea6\u3001logging
\n\u00a0\u00a0alter table wxk_big_tab_bak logging parallel 1;<\/p>\n

\u00a0<\/p>\n

\u6700\u540e\u518d\u6b21\u67e5\u770b<\/p>\n

SQL>select round(BYTES\/1024\/1024,2)||'M' from user_segments wheresegment_name='WXK_BIG_TAB_BAK';<\/p>\n

\u00a0<\/p>\n

ROUND(BYTES\/1024\/1024,2)||'M'<\/p>\n

\n

.06M<\/p>\n

\u6b64\u65f6\uff0c\u8868\u5360\u7528\u7a7a\u95f4\u88ab\u91ca\u653e\u3002<\/p>\n

\u672c\u6587\u518d\u9644\u4e00\u4e2a\u8868\u7a7a\u95f4\u5229\u7528\u7387sql<\/p>\n

SELECT A.TABLESPACE_NAME, \u00a0 \u00a0 \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0FILENUM, \u00a0\u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0TOTAL "TOTAL (MB)", \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0F.FREE "FREE (MB)",
\n\u00a0 \u00a0 \u00a0 \u00a0TO_CHAR(ROUND(FREE 100 \/ TOTAL, 2), '990.00') "FREE%",\u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0TO_CHAR(ROUND((TOTAL - FREE) <\/em> 100 \/ TOTAL, 2), '990.00') "USED%", \u00a0 \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0ROUND(MAXSIZES, 2) "MAX (MB)"
\n\u00a0 FROM (SELECT TABLESPACE_NAME, \u00a0 \u00a0 \u00a0 \u00a0 \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0COUNT(FILE_ID) FILENUM, \u00a0 \u00a0 \u00a0 \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0SUM(BYTES \/ (1024 1024)) TOTAL, \u00a0 \u00a0 \u00a0 \u00a0 \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0SUM(MAXBYTES) \/ 1024 \/ 1024 MAXSIZES \u00a0 \u00a0 \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 FROM DBA_DATA_FILES \u00a0 \u00a0 \u00a0\u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0GROUP BY TABLESPACE_NAME) A, \u00a0 \u00a0\u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0(SELECT TABLESPACE_NAME, ROUND(SUM(BYTES \/ (1024 <\/em> 1024))) FREE \u00a0 \u00a0\u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 FROM DBA_FREE_SPACE \u00a0 \u00a0 \u00a0
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0GROUP BY TABLESPACE_NAME) F
\n\u00a0WHERE A.TABLESPACE_NAME = F.TABLESPACE_NAME<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001\u8868\u7684\u5360\u7528\u7a7a\u95f4\u5927\u5c0f\u91ca\u653e\u539f\u7406 \u80cc\u666f\uff1a \u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u8868\u7531\u4e8e\u6570\u636e\u4e0d\u65ad\u63d2\u5165\uff0c\u5bfc\u81f4\u7a7a\u95f4\u8d8a\u6765\u8d8a\u5927\uff0c\u7531\u4e8e\u524d\u671f\u914d\u7f6e\u95ee\u9898\uff0c\u6ca1\u6709\u505a\u5206\u533a\u6216\u8005\u5176\u4ed6\u4f18\u5316\uff0c\u800c\u4e14\u751f\u4ea7\u6570\u636e\u5b9e\u65f6\u5411\u8868\u63d2\u5165\u3002\u8981\u5220\u9664\u5386\u53f2\u6570\u636e\u6765\u91ca\u653e\u7a7a\u95f4\u3002 \u5206\u6790\uff1a \uff081\uff09\u6ca1\u505a\u5206\u533a\u8868\uff1a \u7531\u4e8e\u6ca1\u6709\u5206\u533a\u8868\uff0c\u6240\u4ee5\u65e0\u6cd5\u5206\u5757\u5bf9\u8868\u8fdb\u884c\u6e05\u7406\u3002 \uff082\uff09\u8868\u5b9e\u65f6\u63d2\u5165\u6570\u636e\uff0c\u6570\u636e\u91cf\u5927\uff0c\u8981\u4fdd\u7559\u90e8\u5206\u6570\u636e\uff1a \u65e0\u6cd5\u91c7\u7528\u5c06\u6709\u6548\u6570\u636e\u63d2\u5165\u53e6\u4e00\u4e2a\u8868\uff0cdrop\u539f\u8868\uff0c\u4fee\u6539\u540d\u5b57\u6765\u5220\u9664\u539f\u8868\uff0c\u6216\u8005truncate\u539f\u8868\uff0c\u6765\u91ca\u653e\u7a7a\u95f4\u3002 \uff083\uff09\u5220\u9664\u5386\u53f2\u6570\u636e\uff1a \u7528delete from \u52a0\u6761\u4ef6\uff0c\u5220\u9664\u5386\u53f2\u6570\u636e\u3002 \u73b0\u8c61\uff1a \u4f8b\u5b50\uff1awxk_big_tab_bak \u8868\u3002 SELECT COUNT(*) FROM wxk_big_tab_bak 168522 \u00a0 SQL> selectround(BYTES\/1024\/1024,2)||’M’ from user_segments where segment_name=’WXK_BIG_TAB_BAK’; ROUND(BYTES\/1024\/1024,2)||’M’ 21M \u00a0 \u5bf9wxk_big_tab_bak \u8fdb\u884cdelete\u64cd\u4f5c\u3002 DECLARE \u00a0\u00a0 row_num number := 0; begin \u00a0\u00a0 for gyj_test IN (select ROWID from wxk_big_tab_bak t where t.id\u00a0 <=168522 )\u00a0 LOOP \u00a0 delete from\u00a0wxk_big_tab_bak\u00a0 WHERE ROWID = gyj_test.rowid ; \u00a0\u00a0 row_num := row_num +1; —100\u6761\u63d0\u4ea4\u4e00\u6b21,\u53ef\u6839\u636e\u9700\u8981\u4fee\u6539 \u00a0\u00a0 if mod(row_num,100) = 0 THEN \u00a0\u00a0\u00a0\u00a0 commit; \u00a0\u00a0 end if; end loop; commit; end; \/ \u6267\u884c\u5220\u9664\u540e SELECT COUNT(*) FROM wxk_big_tab_bak 0 \u518d\u6b21\u67e5\u770b SQL> selectround(BYTES\/1024\/1024,2)||’M’ from user_segments where segment_name=’WXK_BIG_TAB_BAK’; ROUND(BYTES\/1024\/1024,2)||’M’ 21M \u00a0 \u8fd8\u662f21M\u6ca1\u6709\u53d8\u5316\u3002 \u4f46\u662f\u8868\u91cc\u5df2\u7ecf\u6ca1\u6709\u6570\u636e\u4e86\u3002 \u8fd9\u91cc\u6ce8\u610f\uff0c\u518d\u6b21\u7528\u63d2\u5165\u547d\u4ee4\u65b0\u7684\u6570\u636e\uff0c\u8868\u7684\u5927\u5c0f\u6ca1\u6709\u53d8\u5316\u3002\u7531\u6b64\u53ef\u89c1\uff0c\u6570\u636e\u7684\u7a7a\u95f4\u786e\u5b9e\u88ab\u91ca\u653e\u4e86\uff0c\u53ef\u4ee5\u5b58\u50a8\u5176\u4ed6\u4fe1\u606f\uff0c\u4f46\u662f\u4ece\u67e5\u8be2\u4e0a\u770b\uff0c\u8868\u5360\u7528\u7684\u7a7a\u95f4\u5927\u5c0f\u6ca1\u6709\u7f29\u5c0f\uff0c\u6ca1\u6709\u6574\u7406\u8868\u788e\u7247\u3002\uff08\u9ad8\u6c34\u4f4d\u95ee\u9898\uff09\u3002 \u00a0 \u5982\u679c\u9700\u8981\u5c06\u8868\u7684\u7a7a\u95f4\u8fdb\u884c\u7f29\u5c0f\uff0c\u6709\u4e24\u4e2a\u529e\u6cd5\uff1a \uff081\uff09move \uff082\uff09shrink 1\u3001\u5bf9\u4e8e\u7a7a\u95f4\u7684\u8981\u6c42\uff0cshrink\u4e0d\u9700\u8981\u989d\u5916\u7684\u7a7a\u95f4\uff0cmove\u9700\u8981\u4e24\u500d\u7684\u7a7a\u95f4 2\u3001shrink\u7684\u7b97\u6cd5\u662f\u4ecesegment\u7684\u5e95\u90e8\u5f00\u59cb\uff0c\u79fb\u52a8row\u5230segment\u7684\u9876\u90e8\uff0c\u79fb\u52a8\u7684\u8fc7\u7a0b\u76f8\u5f53\u4e8edelete\/insert\u64cd\u4f5c\u7684\u7ec4\u5408\uff0c\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u4f1a\u4ea7\u751f\u5927\u91cf\u7684undo\u548credo\u4fe1\u606f\u3002 3\u3001move\u662f\u76f4\u63a5\u79fb\u52a8\u6570\u636e\u5757\u7684\u4f4d\u7f6e\uff0c\u9274\u4e8e\u4e0a\u9762\u7684\u539f\u56e0\uff0c\u5728\u4f7f\u7528shrink\u7684\u65f6\u5019\uff0c\u8017\u65f6\u53ef\u80fd\u975e\u5e38\u957f\uff0c\u901a\u5e38\u6162\u4e8emove\u3002 4\u3001move\u662f\u4e0d\u80fd\u5728\u7ebf\u8fdb\u884c\u7684\uff0c\u800c\u4e14move\u540e\u76f8\u5e94\u7684\u7d22\u5f15\u4e5f\u4f1a\u5931\u6548\u3002shrink\u7684\u4e00\u4e2a\u4f18\u70b9\u662f\u80fd\u5728\u7ebf\u8fdb\u884c\uff0c\u4e0d\u5f71\u54cd\u8868\u4e0a\u7684DML\u64cd\u4f5c\uff0c\u5f53\u7136\uff0c\u5e76\u53d1\u7684DML\u64cd\u4f5c\u5728shrink\u7ed3\u675f\u7684\u65f6\u523b\u4f1a\u51fa\u73b0\u77ed\u6682\u7684block\uff1bshrink\u7684\u53e6\u5916\u4e00\u4e2a\u4f18\u70b9\u662f\u5728\u788e\u7247\u6574\u7406\u7ed3\u675f\u540e\uff0c\u8868\u4e0a\u76f8\u5173\u7684index\u4ecd\u7136enable\u3002 \u00a0 \u5bf9\u4e8e\u4e00\u822c\u7cfb\u7edf\uff0c\u53ef\u91c7\u7528shrink\u65b9\u5f0f\uff08\u4ec5\u4ec5\u9002\u7528\u4e8e\u5806\u8868,\u4e14\u4f4d\u4e8e\u81ea\u52a8\u6bb5\u7a7a\u95f4\u7ba1\u7406\u7684\u8868\u7a7a\u95f4(\u5806\u8868\u5305\u62ec:\u6807\u51c6\u8868,\u5206\u533a\u8868,\u7269\u5316\u89c6\u56fe\u5bb9\u5668,\u7269\u5316\u89c6\u56fe\u65e5\u5fd7\u8868)\uff09\uff1a \uff081\uff09\u542f\u7528\u884c\u8bb0\u5f55\u8f6c\u79fb(enable row movement)\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0 alter table wxk_big_tab_bak enable row movement ; \uff082\uff09\u8fd9\u91cc\u5148\u6267\u884ccompact \u518d \u5230\u7a7a\u95f2\u65f6\u95f4\u6267\u884c cascade ALTER TABLE wxk_big_tab_bak SHRINK SPACE COMPACT ALTER TABLE wxk_big_tab_ba SHRINK SPACE cascade\u00a0 –compact:\u4ec5\u4ec5\u662f\u7f29\u5c0f\u8868\u548c\u7d22\u5f15\uff0c\u5e76\u4e0d\u79fb\u52a8\u9ad8\u6c34\u4f4d\u7ebf\uff0c\u4e0d\u91ca\u653e\u7a7a\u95f4 –cascade:\u7f29\u5c0f\u8868\u53ca\u5176\u7d22\u5f15\uff0c\u5e76\u79fb\u52a8\u9ad8\u6c34\u4f4d\u7ebf\uff0c\u91ca\u653e\u7a7a\u95f4 \u00a0 \u5bf9\u4e8e\u91cd\u8981\u7cfb\u7edf\uff0c\u6700\u597d\u8fd8\u662f\u91c7\u7528move \uff081\uff09move\u524d\u6700\u597d\u903b\u8f91\u5907\u4efd\u5f85\u6574\u7406\u7684\u8868\uff1b \uff082\uff09–\u67e5\u770b\u7d22\u5f15 select index_name,table_name,tablespace_name,index_type,status\u00a0 from dba_indexes\u00a0 where table_owner=’WXK’ \uff083\uff09\u5bf9\u4e8e\u5927\u8868\uff0c\u5efa…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[88,82],"tags":[],"class_list":["post-1589","post","type-post","status-publish","format-standard","hentry","category-oracle","category-82"],"_links":{"self":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1589"}],"version-history":[{"count":1,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1589\/revisions"}],"predecessor-version":[{"id":1590,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=\/wp\/v2\/posts\/1589\/revisions\/1590"}],"wp:attachment":[{"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oneai.eu.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}